CN204736852U - Car misses safety braking system that steps on gas - Google Patents
Car misses safety braking system that steps on gas Download PDFInfo
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- CN204736852U CN204736852U CN201520437876.2U CN201520437876U CN204736852U CN 204736852 U CN204736852 U CN 204736852U CN 201520437876 U CN201520437876 U CN 201520437876U CN 204736852 U CN204736852 U CN 204736852U
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- Regulating Braking Force (AREA)
- Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
Abstract
The utility model discloses a car misses safety braking system that steps on gas. This system includes control switch module, misses steps on identification module and brake control module. Link to each other through the CAN bus between each module, ECU misses the safety braking system that steps on the gas through the CAN bus control. Wherein, control switch module adopts manual switch module and/or acoustic control switch module, and the mistake is stepped on identification module and is adopted time domain flow monitoring method, mainly including installing flow sensor and data processing and the analytic system in supplying the oil pipe way, brake control module ECU control stepper motor and direct current motor respectively carries out the brake control. The utility model discloses a direct detection fuel feeding speed and acceleration to the method of cooperation manual control or acoustic control is differentiated the mistake and is stepped on, and the accuracy is strong, takes place the probability greatly reduced of mistake discernment, has improved security and reliability, can effectively avoid the incident that the mistake stepped on the gas and lead to.
Description
Technical field
The utility model belongs to the automobile safety protector of automatic control technology field and vehicle intelligent control field; be specifically related to a kind of mistake step on accelerator of vehicle sure brake system; be used for prevention when automobile needs emergency braking, and throttle is stepped on suddenly as brake pedal by mistake and is caused traffic accidents by steerman.
Background technology
In recent years, China's automobile pollution significantly improves, while traffic environment day is becoming tight, the quantity of annual newly-increased steerman is also advanced by leaps and bounds, the entirety level of driving of steerman allows of no optimist, in vehicle traveling process, when meeting emergency situation and needing braking badly, due to the steerman operation reason such as unskilled and nervous, there is mis-accelerator pressing and to cause the report of traffic accident of common occurrence.Safety guard not to mis-accelerator pressing on the automobile generally applied at present, and also there is many defects in existing relevant research and development patent.
Develop a kind of mis-accelerator pressing safety guard and mainly face two key issues: one is how to differentiate normally to trample throttle or mis-accelerator pressing, and reacts in time; Two is the accuracys guaranteeing to identify, avoids " identifying " to cause more serious consequence by mistake.Find through existing research and development patent retrieval, the mode of the differentiation mis-accelerator pressing of current employing mainly contains following two kinds: the first is installation site, somewhere sensor in Das Gaspedal and transmission device thereof or limiting device, is differentiated or is limited step on by mistake by Das Gaspedal tread amount.The second is detected by the speed/acceleration/pressure sensor be arranged on Das Gaspedal or Das Gaspedal transmission shaft to trample the information such as the speed/acceleration/pressure of Das Gaspedal, when tested measurement exceeds a certain preset value, differentiates now for step on by mistake.Be not difficult to find, there is obvious defect in the first scheme: works slow, travels distance, can not brake in time before braking.In first scheme, step on by mistake means of identification (namely described sensor) contact with steerman easier, poor anti jamming capability, the such as change in accelerator free travel or transmission device gap all can cause the speed of trampling and pedal force to change, more easily there is " by mistake identifying " phenomenon, cause more serious consequence.
Utility model content
The purpose of this utility model overcomes the deficiencies in the prior art, and provide a kind of mistake step on accelerator of vehicle sure brake system and braking method thereof, technical scheme is as follows:
A kind of mistake step on accelerator of vehicle sure brake system, comprises master cock module, steps on identification module and brake control module by mistake, is connected between each module by CAN; Described master cock module comprises manual switch module and/or audio-switch module; Described identification module of by mistake stepping on is primarily of the flow sensor be arranged in oil feed line and data process&analysis system composition; The stepping motor that described brake control module comprises mis-accelerator pressing control for brake ECU and controlled by ECU and DC machine.
Described manual switch module mainly comprises the manual switch be arranged on the right spoke of vehicle steering, steerman is in case of emergency taken advantage of a situation and presses this switch.
Described audio-switch module comprises the sonic transducer be connected in parallel in CAN, Speaker Identification module, sound identification module and the data process&analysis system shared with stepping on identification module by mistake.
Described Speaker Identification module and sound identification module comprise pretreatment unit, feature extraction unit, training unit and diagnosis unit respectively.
The beneficial effect that the utility model brings is:
1, the utility model traffic accident that can effectively avoid mis-accelerator pressing to cause;
2, flow sensor direct-detection delivery rate, acceleration/accel is adopted, coordinate the voice activated control of manual switch module and the Speaker Identification function of installing on the steering wheel to differentiate to step on by mistake, this method of discrimination accuracy is strong, the probability that " identifying " occurs by mistake reduces greatly, improves safety and reliability;
3, adopt the advantage of CAN structure to be that the transmission efficiency of information is higher, connect up simpler;
4, after being determined as and stepping on by mistake, ECU sends simultaneously and cuts off fuel feeding and emergency braking instruction, guarantees driving safety;
5, do not need to do excessive change to primary car structure, therefore package implements relatively easy.
Accompanying drawing explanation
Fig. 1 is the utility model system architecture diagram
Fig. 2 is the structured flowchart that the utility model system installs manual switch module and acoustic control switch module;
Fig. 3 is the position view of manual switch in the utility model;
Fig. 4 is the Speaker Identification/speech recognition process schematic diagram of audio-switch module in the utility model.
In figure:
I-manual switch module, II-audio-switch module, III-master cock module, IV-steps on identification module by mistake, V-brake control module;
A-manual switch.
Detailed description of the invention
The E-gas generally applied at present is, by the throttle position switch in Das Gaspedal, Das Gaspedal depth information is passed to ECU, then controls throttle opening by ECU Driving Stepping Motor.The utility model is a controlling brancher in parallel on this basis, this branch road is connected to ECU in CAN and former car throttle gate stepping motor composition primarily of one, when ECU receive simultaneously fuel feeding overrun signal and phonetic order signal time, ECU Driving Stepping Motor throttle valve is closed, and cuts off fuel feeding.
The utility model brake control module also comprises a DC machine, when ECU receive simultaneously fuel feeding overrun signal and phonetic order signal time, ECU drive DC machine Hydraulic Pump operate, in brake wheel cylinder, pump into braking liquid, enforcement emergency braking.
Two circuits at described DC machine and stepping motor place are all parallel relationship with primary car structure, and work is independent of each other.
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described:
As shown in Figure 1, a kind of controlled mistake step on accelerator of vehicle sure brake system, comprises master cock module ii I, steps on identification module IV and brake control module V by mistake, is connected between each module by CAN; The described identification module IV that by mistake steps on adopts time domain flow monitoring method, mainly comprises and is arranged on flow sensor in oil feed line and data process&analysis system; The stepping motor 7 that described brake control module V comprises mis-accelerator pressing control for brake ECU and controlled by ECU and DC machine 9.
As shown in Figure 2, described master cock module ii I adopts manual switch module I and acoustic control switch module II; Wherein, manual switch module I is manual switch, and audio-switch module ii comprises the sonic transducer be connected in parallel in CAN, Speaker Identification module, sound identification module and the data process&analysis system public with stepping on identification module IV by mistake.
As shown in Figure 3, described manual switch is arranged on the right spoke of vehicle steering, in case of emergency takes advantage of a situation press this switch to facilitate steerman.
As shown in Figure 4, Speaker Identification module adopts current widely used speech recognition technology, comprises pretreatment unit, feature extraction unit, training unit and diagnosis unit.
Brake system of the present utility model is in specific implementation process, its master cock module not only can adopt the form of manual switch module and speech control module simultaneously, individually can also adopt the mode of manual switch module or speech control module, its corresponding brake control module V and to step on identification module IV all similar by mistake, repeats no more herein.
The braking operation process corresponding with above-mentioned brake system of the present utility model is as follows:
1, the working process under manual control module
As shown in Figure 1, Figure 2 and Figure 3, the braking method of this mistake step on accelerator of vehicle sure brake system is as follows:
Step one: by mistake step on identification module IV) by being arranged in the delivery quality Δ x of flow sensor Real-Time Monitoring every section of tiny time interval of delta t of oil feed line, and convert electric signal to, after the process of data process&analysis system, be delivered to electronic controller ECU, ECU6) delivery rate (being judged by Δ x) and fuel feeding acceleration/accel is calculated (by poor for the delivery quality Δ xk-1 of the delivery quality Δ xk in any Δ tk and previous Δ tk-1 according to the electric signal of reaction Δ x received and described time gap Δ t, this difference sigma is fuel feeding acceleration/accel), when delivery rate and fuel feeding acceleration/accel all exceed setting threshold, judge to occur that fuel feeding is overrun, and export fuel feeding to ECU and to overrun signal,
Step 2: when navigating mate recognizes oneself possibility mis-accelerator pressing, and health has little time receive pin, cause unexpected stress, this in emergency circumstances navigating mate to take advantage of a situation the hand switch pressed on the right spoke of vehicle steering, trigging control switch module III, and master cock module energizing signal is sent to ECU;
Step 3: judge mis-accelerator pressing signal, when ECU receive simultaneously described fuel feeding overrun signal and master cock module energizing signal time, judge drive artificial mis-accelerator pressing;
Step 4: implement emergency braking, when ECU judges to drive artificial mis-accelerator pressing, ECU control step driven by motor throttle gate is closed instantaneously, engine stop fuel feeding, simultaneously, ECU controls DC machine and drives Hydraulic Pump running, and braking liquid is pumped into brake wheel cylinder, thus promotes drg enforcement emergency braking.
2, the working process under speech control module
As shown in Figure 1, Figure 2 and Figure 4, the braking method of this mistake step on accelerator of vehicle sure brake system is as follows:
Dead work: before system uses, steerman needs repeatedly to repeat input voice information to Speaker Identification module, this module adopts specific speech analysis method to analyze the speech characteristic parameter of speaker, and these parameters store as mode standard, forms reference model storehouse.The principle of work of described sound identification module is similar to Speaker Identification module, and the two maximum difference is training process and template base difference.The mode standard stored in the template base of sound identification module is voice content information, and for identifying voice content, and what store in the template base of Speaker Identification module is individual pronunciation different information, for identifying that sounding is individual.Above-mentioned work is the training process of audio-switch module ii before occurring in system use.
Step one: by mistake step on identification module IV by being arranged in the delivery quality Δ x of flow sensor Real-Time Monitoring every section of tiny time interval of delta t of oil feed line, and convert electric signal to, after the process of data process&analysis system, be delivered to electronic controller ECU, ECU calculates delivery rate (being judged by Δ x) and fuel feeding acceleration/accel (by poor for the delivery quality Δ xk-1 of the delivery quality Δ xk in any Δ tk and previous Δ tk-1 according to the electric signal of the reaction Δ x received and described time gap Δ t, this difference sigma is fuel feeding acceleration/accel), when delivery rate and fuel feeding acceleration/accel all exceed setting threshold, judge to occur that fuel feeding is overrun, and export fuel feeding to ECU and to overrun signal,
Step 2: when navigating mate recognizes oneself possibility mis-accelerator pressing, and health has little time receive pin, cause nervous suddenly and make a scene, at this in emergency circumstances navigating mate output phonetic order, after pretreatment, feature extraction, pattern match, recognition result is exported after phonetic order input, if recognition result be voice from steerman, and with preset the voice messaging such as " STOP ", " brake " match, then trigging control switch module III;
Step 3: judge mis-accelerator pressing signal, when ECU receive simultaneously described fuel feeding overrun signal and master cock module energizing signal time, judge drive artificial mis-accelerator pressing;
Step 4: implement emergency braking, when ECU judges to drive artificial mis-accelerator pressing, ECU control step driven by motor throttle gate is closed instantaneously, engine stop fuel feeding, simultaneously, ECU controls DC machine and drives Hydraulic Pump running, and braking liquid is pumped into brake wheel cylinder, thus promotes drg enforcement emergency braking.
According to the above control module working process, audio-switch module ii and manual switch module I are all real time operationes, are independent of each other, and no matter ECU collects signal that arbitrary module transmits or collects two kinds of signals simultaneously, all can normally work.
Mistake step on accelerator of vehicle sure brake system of the present utility model, master cock module both can be designed to the parallel structure of manual switch module and acoustic control switch module, also can select wherein any one master mode, namely be designed to " a kind of mistake step on accelerator of vehicle sure brake system of manual control " or " a kind of mistake step on accelerator of vehicle sure brake system of acoustic control ".
The utility model is not limited to above-described embodiment; the object can also created according to the utility model makes multiple change; the change made under all principles according to technical solutions of the utility model, modification, substitute, combination, to simplify; all should be the substitute mode of equivalence, all belong to protection domain of the present utility model.
Claims (4)
1. a mistake step on accelerator of vehicle sure brake system, is characterized in that: comprise master cock module, step on identification module and brake control module by mistake, is connected between each module by CAN; Described master cock module comprises manual switch module and/or audio-switch module; Described identification module of by mistake stepping on is primarily of the flow sensor be arranged in oil feed line and data process&analysis system composition; The stepping motor that described brake control module comprises mis-accelerator pressing control for brake ECU and controlled by ECU and DC machine.
2. a kind of mistake step on accelerator of vehicle sure brake system as claimed in claim 1, is characterized in that: described manual switch module mainly comprises the manual switch be arranged on the right spoke of vehicle steering, steerman is in case of emergency taken advantage of a situation and presses this switch.
3. a kind of mistake step on accelerator of vehicle sure brake system as claimed in claim 1, is characterized in that: described audio-switch module comprise the sonic transducer be connected in parallel in CAN, Speaker Identification module, sound identification module and with the data process&analysis system stepped on identification module by mistake and share.
4. a kind of mistake step on accelerator of vehicle sure brake system as claimed in claim 3, is characterized in that: described Speaker Identification module and sound identification module comprise pretreatment unit, feature extraction unit, training unit and diagnosis unit respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520437876.2U CN204736852U (en) | 2015-06-24 | 2015-06-24 | Car misses safety braking system that steps on gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520437876.2U CN204736852U (en) | 2015-06-24 | 2015-06-24 | Car misses safety braking system that steps on gas |
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| Publication Number | Publication Date |
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| CN204736852U true CN204736852U (en) | 2015-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520437876.2U Expired - Fee Related CN204736852U (en) | 2015-06-24 | 2015-06-24 | Car misses safety braking system that steps on gas |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104986158A (en) * | 2015-06-24 | 2015-10-21 | 吉林大学 | Automobile accelerator pedal mistaken stepping safety braking system and braking method thereof |
| CN106218406A (en) * | 2016-08-31 | 2016-12-14 | 法乐第(北京)网络科技有限公司 | Security devices for cars, running car method and automobile |
-
2015
- 2015-06-24 CN CN201520437876.2U patent/CN204736852U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104986158A (en) * | 2015-06-24 | 2015-10-21 | 吉林大学 | Automobile accelerator pedal mistaken stepping safety braking system and braking method thereof |
| CN104986158B (en) * | 2015-06-24 | 2018-04-27 | 吉林大学 | A kind of mistake step on accelerator of vehicle sure brake system and its braking method |
| CN106218406A (en) * | 2016-08-31 | 2016-12-14 | 法乐第(北京)网络科技有限公司 | Security devices for cars, running car method and automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151104 Termination date: 20200624 |